Quality factors of rotors with hydrodynamic bearings

Journal Article · Wed Mar 31 23:00:00 EST 1993 · Journal of Engineering for Gas Turbines and Power; (United States)

DOI:https://doi.org/10.1115/1.2906703· OSTI ID:6504963

Rao, J S ^[1]

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1. Indian Inst. of Tech., New Delhi (India)

The quality factor of a system is a measure of the maximum amplitude of vibration that occurs at resonance when the frequency of excitation is equal to the undamped natural frequency. This factor can be easily determined for a given mode of vibration, given its equivalent viscous damping ratio, as Q = 1/2[xi]. Such a definition becomes complicated for a rotor mounted on hydrodynamic bearings. This note discusses some factors involved in estimating the quality factor of a rotor.

• OSTI ID: 6504963
• Journal Information: Journal of Engineering for Gas Turbines and Power; (United States), Journal Name: Journal of Engineering for Gas Turbines and Power; (United States) Vol. 115:2; ISSN JETPEZ; ISSN 0742-4795
• Country of Publication: United States
• Language: English

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